Lincoln Electric SVM186-A Product Description, Recommended Processes and EQUIP- Ment

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B-3

OPERATION

B-3

 

 

PRODUCT DESCRIPTION

PROCESS LIMITATIONS

 

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The PRECISION TIG® 225 is a member of our field acclaimed PRECISION TIG® family of industrial arc welding power sources. Premium features include:

1.Precise constant current output.

2.Full range square wave AC/DC TIG (GTAW) welding.

3.Enhanced version of the patented Micro-Start II™ Technology for its lower Minimum(5 amps) to higher Maximum (230 amps) output control range.

4.Built-in high frequency stabilization for DC TIG starting and continuous AC TIG welding.

5.AC/DC Stick (SMAW capability.) A new undercarriage (with gas bottle rack) is available for field installation, or is included with an available Ready-Pak TIG Welding Package. The PRECISION TIG® patented convenient built-in storage provisions for welding components and cable management.

The PRECISION TIG® 225 also provides advanced features such as:

•Digital Meter

•Presettable control, adjustable Auto Balance™

•Fan As Needed (F.A.N.)

•Timers for fixed Preflow and variable Postflow shielding gas.

•Built-in, easy to set single knob Pulse TIG control with a "blinking" light to indicate the pulse frequency setting.

•Auto-Sense remote control selection.

•Tool-less Twist-Mate™ electrode cable connection.

•Built-in work clamp cable permanently attached.

Four models are available for 60Hz. with Domestic and Canadian input voltages, as well as an International model with 50/60Hz voltages.

An Auxiliary 115vac Receptacle with Circuit Breaker are included on the back panel of the PRECISION TIG® 225 models. The Canadian (K2533-2) and International (K2534-

1)models are rated 6 amps, while the 208/230/1/60 models (K2533-1 and K2535-1/-2) are rated 20 amps (for use with Lincoln’s 115v SP and Power MIG models).

RECOMMENDED PROCESSES AND EQUIP- MENT

RECOMMENDED PROCESSES

The PRECISION TIG® 225 is recommended for the TIG (GTAW) and Stick (SMAW) welding processes within its out- put capacity range of 5 amps DC or AC to 225 amps AC/DC. It is compatible with most Magnum TIG accessories, as well as many industry standard items, such as TIG torches (adapted for Twist-Mate™), hoses, and water coolers.

The PRECISION TIG® machines are not recommended for arc gouging due to its limited output capacity, and are also not recommended for pipe thawing.

RECOMMENDED EQUIPMENT/INTERFACE

(See Installed Options in Accessories Section for more details)

The PRECISION TIG® 225 will be available as a basic Machine (Only) and in two Factory-Configured Welding Packages:

1.Machine(Only) (K2345-1)

2.Ready-Pak (K2347-1)

3.Ready-Pak w/Cart (K2347-2)

Basic module will also be available with Domestic, Canadian and International input voltages for user configuration, with optional accessories.

Select Machine

208/230/1/60 Machine with NEMA 6-50P

 

Plug Cable and Receptacle (K2533-1)

 

460/575/1/60 Machine only with cable (K2533-2)

 

380/400/415/1/50/60 Machine only

 

with cable (K2534-1)

 

Torch Starter Kit

Air Cooled System:

 

Water Cooled System:

(Select one)

TIG-Mate

 

TIG-Mate 20

 

Torch Starter Kit*

 

Torch Starter Kit*

Water Cooler

Not Applicable

 

115V 50/60Hz

 

 

 

Cool-Arc 40*

Under-Storage

K2348-(*)

 

Cart (Optional )

 

 

 

Optional Remote

Arc Start Switch*

Trigger Device

Foot Amptrol*

(Select one)

Start Pedal Foot Amptrol*

 

Hand Amptrol*

*For “Part Numbers” or “K Numbers” see Accessories Section.

EQUIPMENT LIMITATIONS

The PRECISION TIG® machines are protected from over loads beyond the output ratings and duty cycles, per the Specifications in the Installation Section, with Thermostat protection of the out- put power coils and rectifiers.

The PRECISION TIG® 225 machine uses Twist-Mate™ output terminals, therefore stud connection adapters (such as LECO. S19257-series) cannot be used for torch connection.

If a PRECISION TIG® 225 is powered from an engine generator which doesn’t have sufficient capacity, the AC Balance control and the Output control will not provide full range of control.

WELDING CAPABILITY(Duty Cycle)

The PRECISION TIG® 225 is rated at 225 amps, 29 volts, at 10% duty cycle on a ten minute basis. It is capable of higher duty cycles at lower output currents. See rated output graph, on specification sheet located in the Installation Section. If the duty cycle is exceeded, a thermal protector will shut off the output until the machine cools.

PRECISION TIG® 225

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Contents Precision TIG ISAFETYi Fumes and Gases SafetyFor Electrically Powered equipmentSûreté Pour Soudage a LʼArc Précautions DE SûretéElectromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Input Single Phase only InstallationK2533-2 Input at Rated Output Model Height Width Depth WeightTilting Safety PrecautionsSelect Suitable Location Mounting Lifting and MovingInput and Grounding Connections Return Section TOC Input Reconnect ProcedureConnections for Stick Smaw Welding Connections for TIG Gtaw WeldingPrecision TIG Table of Contents Operation Section Operation Recommended Processes and EQUIP- Ment Product DescriptionControl Functionality Figure B.1 Control PanelPOWER-UP Sequence Machine Rating Plate Case Rear ComponentsOperating Steps Welding in TIG ModePulse TIG Control Operation Turn the power switch to on Welding in Stick ModePrecision TIG Table of Contents Accessories Section Standard Equipment Packages AccessoriesTable C.1 Table C.2 Factory Installed OptionsK2348-1 Under-Storage Cart Field Installed OptionsTable of Contents Maintenance Section Spark GAP Adjustment MaintenanceSafety Precautions Routine and Periodic Maintenance1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Input Power CircuitGeneral Description Protected Output Rectification Feedback ControlFigure E.2 High Voltage/High Frequency Circuit High Voltage / High Frequency CircuitFigure E.5 DC Welding Current Generation DC Welding OutputFigure E.6 AC Square Wave Welding Current Generation AC Welding OutputFigure E.7 SCR Operation SCR OperationVAC Receptacle Protective CircuitsThermal Protection Overload Protection1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and RepairWorkstations PC Board Troubleshooting ProceduresPerform the T1 Transformer Amptrol is depressed Troubleshooting and Repair Perform the SCR Bridge Test Possible Areas Misadjustments Problems SymptomsRecommended Course of Action Troubleshooting and Repair Troubleshooting and Repair Problems Symptoms Electric Shock can Perform the SCR Bridge Test Stick electrode Blasts Off when Weld current may be set too Test Description High Frequency Circuit Disable ProcedureMaterials Needed Figure F.1 Spark GAP Assembly ProcedureT1 Transformer Test T1 Transformer Test Primary Windings Primary Voltages Precision TIG Static SCR Test Precision TIG 225 Control Test ProcedureCase Cover Removal and Replacement Procedure Precision TIG Active SCR Test Active SCR Test Figure F.6 SCR Gate Locations Precision TIG Scope Settings Normal Open Circuit Voltage Waveform AC TIG ModeNormal Open Circuit Voltage Waveform DC TIG Mode Normal Open Circuit Voltage Waveform AC Stick Mode Normal Open Circuit Voltage Waveform DC Stick Mode Typical Output Voltage Waveform Machine Loaded AC TIG ModeMachine Loaded to 180 Amps AT 16VDC DC TIG Mode Machine Loaded to 180 Amps AT 26VDC AC Stick ModeDC Stick Mode Troubleshooting and Repair Precision TIG SCR Bridge Assembly Removal and Replacement Procedure Figure F.7 Case Back Mounting Screws SCR Bridge AssemblyProcedure Plug J2 Removed Replacement Procedure Precision TIG Polarity Switch Removal and Replacement Procedure Removal Procedure Polarity SwitchReplacement Procedure Precision TIG High Voltage Transformer Removal and Replacement Procedure Transformer Secondary Leads High Voltage TransformerFigure F.12 High Voltage Transformer Mounting Insulators Precision TIG 53F-53 Perform the SCR Bridge Assembly Replacement Procedure Input Idle Amps Retest After RepairRecommended Meters for Machine Output Tests Precision TIG Table of Contents Diagram Section Electrical Diagrams Schematic Complete Machine ALL Codes G5647 Schematic Control PC Board #1 G5640 Schematic Control PC Board #2 G5640 Schematic Control PC Board #3 G5640 PC Board Assembly Control #1 G5641 PC Board Assembly Control #2 G5641 1B0-S22530 PC Board Assembly Bypass L10121

SVM186-A specifications

The Lincoln Electric SVM186-A is a versatile and highly efficient welding machine that stands out in the competitive landscape of industrial welding equipment. Designed to meet the needs of both professionals and hobbyists, this machine combines advanced technology with robust construction, delivering outstanding performance in various welding applications.

One of the standout features of the SVM186-A is its multi-process capability. This welding machine can handle MIG, TIG, and Stick welding processes, making it suitable for a diverse range of projects, from light fabrication to heavy-duty work. This flexibility reduces the need for multiple machines, saving time and space for users who require versatility in their welding operations.

The SVM186-A is powered by a reliable and durable inverter technology, which ensures a stable arc and efficient operation across different materials, including stainless steel, aluminum, and mild steel. This inverter technology not only enhances performance but also reduces energy consumption, making it an environmentally friendly choice.

Another notable characteristic of the SVM186-A is its user-friendly interface. The digital display provides real-time information on voltage and wire feed speed, allowing welders to easily adjust settings for optimal results. This intuitive control panel design makes it accessible for both novice welders and seasoned professionals who value precision.

The machine is also built with safety features in mind. It comes equipped with overcurrent protection and thermal overload protection to prevent damage during operation. This ensures that users can work confidently, knowing that the equipment is designed to handle demanding tasks while prioritizing safety.

Portability is another advantage of the SVM186-A. Weighing in at a relatively light weight compared to other industrial welders, this machine is designed for ease of transport. Whether working on-site or in a workshop, welders can easily move the equipment as needed.

In summary, the Lincoln Electric SVM186-A is a sophisticated welding machine that merges technology and practicality. Its multi-process capability, inverter technology, user-friendly interface, safety features, and portability make it a top choice for those seeking dependable and efficient welding solutions. Whether for professional fabrication or personal projects, the SVM186-A is equipped to handle the demands of modern welding tasks with exceptional ease and effectiveness.
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